help me !500B 3187A bought the sensor located. the black.

Here's the deal. You can switch those around, they are just a rheostat kind of input. However, you first need to center the key-way. It is spring loaded so you have to initially find full open/full close[where is sits static]. You then wind it up, set the shaft into the key slot. See that?

So really, you have to first catch the slot, spin the sensor about one turn, slide it in. Then with key on, all hooked up, you move the slot until the FI leaves the dash, you are back to normal dash = No code.